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小山水电站工程由钢筋混凝土面板堆石坝、岸坡溢洪道、引水系统及发电厂房组成。在施工中导流洞大塌方采取先衬砌上半洞，下部边墙用钢筋混凝土柱墙及锚喷支护处理，保证了１９９４年按期实现了大江冰期截流和大坝挡汛、壤土心墙围堰冬期施工。在技施阶段重新推荐堆石料场，为大坝正常按期填筑提供了可靠保证。坝基开挖采取自下向上分层分阶段开挖施工；上坝施工路分期分层布置，堆石料冰冻季节填筑。增设了引水系统施工支洞，加快了引水隧洞施工进度。发电厂房基坑混凝土浇筑在１９９５年入冬前仍处在河水位以下，河床渗水比较严重（１２ｍ３／ｈ），经充水越冬保温，取得了成功。
Xiaoshan Hydropower Project consists of reinforced concrete face rockfill dam, spillway, diversion system and power plant. In the construction of large collapse cave diversion tunnel to take the first half hole, the lower side wall with reinforced concrete column wall and anchor spray support treatment to ensure that in 1994 on schedule to achieve the large river ice closure and dam flood, loam core wall Weir winter construction. Re-recommend during the technical phase of the rockfill yard, the dam on schedule to provide a regular and reliable guarantee. Dam foundation excavation to take from bottom to top stratification excavation construction; dam construction road staging layout, rockfill material filling season. An additional water diversion system construction branch hole, speed up the diversion tunnel construction progress. Concrete pits of powerhouse pit were still below the water level before the winter of 1995, and seepage was serious in the riverbed (12m3 / h). After water-filling overwintering, the success was achieved.